A man was 32 years of age when he had his first son. His wife was 35 years of age when his son attained the age of 7 years. The difference between the age of the father and the mother is _____ .
1). 7 years
2). 3 years
3). 5 years
4). 4 years
When the couple's first son was born the father was 32 years old.
After 7 years, mother's age was 35 .
So, after 7 years, father's age would have been (32 + 7)
When the couple's son was 7 years old,
Mother's age was 35 and
Father's age was 39
The difference between their age is ===> (39 - 35)
===> 4
So, the correct option is 4). 4 years